Pipe size for hot water

oliboni.n.lee

Hi, i am replacing some pipes at home and a bit confused about size.

1 - need to replace old pipe from the main source of cold water to kitchen tap and water tank. What size of pipe and specifications?

2 - Need to replace pipe from hot water cylinder to kitchen hot tap. Which size and specifications?

my3cents

Given the lack of replies from actual plumbers here's my answer right or wrong.

1 - 1/2 inch. Its under mains pressure so hopefully good flow rate and your supply is probably only 1/2 inch anyway

2 - many are done in 1/2 inch but if you have a low head of water (low pressure) 3/4 inch would be better.

Both can be qualpex but the first meter of pipe from the HWC should be in copper.